固体酒精的制备两种方法(国外英文资料).docVIP

固体酒精的制备两种方法(国外英文资料) Experiment 1 solid alcohol preparation The scientific name of alcohol is ethanol, burns smokeless tasteless, safety and health, but because it is liquid, more volatile, carrying the inconvenience made solid alcohol, such as reduced volatile and easy to pack and carry, use more secure. One, the purpose of the experiment Master the principle and method of the preparation of solid alcohol. Second, the experimental principle The sodium stearate is softened by heat and solidified by cooling, mixing liquid alcohol with sodium stearate, which is hot and cold Then sodium stearate contains alcohol, which is a solid product. Method 2 to add shellac, stone wax as binder, can obtain the solid alcohol with stronger texture. At the same time They can burn, make it burn longer, and release more heat. Laboratory instruments and reagents 1, the experimental apparatus Adjustable electric stove (0-1000 - w), water-bath water (500 ml), spherical condenser pipe, 250 ml three flask (24), thermometer (1-100), a stopwatch 1 piece, burning basin, beaker ml13 (100), a mold (He Zhu shape, V - 200 ml) 2. Laboratory reagents Industrial alcohol ( is 95% Sodium stearate AR Shellac (industrial grade) Solid paraffin AR Sodium hydroxide AR zeolite Four, the experiment step Method one: 1, according to 0.8 g (0.02 mol) sodium hydroxide, quickly crushed into small particles, add in 250 ml flask, add 1 g shellac, 80 ml of alcohol and several small grain of zeolite, reflux condenser pipe, water bath heating circumfluence to dissolve back into the body, 2, add in 100 ml beaker 5 g (about 0.02 mol) stearic acid and 20 ml of alcohol, warm stearic acid dissolve in water bath, and then from the condenser pipe top to add material in a beaker containing sodium hydroxide, shellac and alcohol three flask, shaking, mixing reflux after different time to water bath, the reaction mixture of natural cooling, stay cool to 50 degrees in mould, sealed to avoid alcohol volatilization, completely cured